Evaluation of Quizalofop-Resistant Rice for Arkansas Rice Production Systems

Table 4

Effect of grass growth stage at time of first quizalofop application on barnyardgrass, broadleaf signalgrass, and red rice control in 2014 and 2015 at Stuttgart, AR.

Growth stage	Control
	2014		2015
	ECHCG	BRAPP	ECHCG	BRAPP	ORYSA
2-leaf	98 a	98 a	98 a	98a	99 a
6-leaf	87 b	95 b	93 b	97a	97 b

ECHCG: barnyardgrass, BRAPP: broadleaf signalgrass, ORYSA: red rice. Growth stage of grasses at the first application of quizalofop with a subsequent applications 14 days later. Means within a column followed by the same letter are not different according to Fisher’s protected LSD (). 2015 resulted in no significant difference between growth stage at initial application for broadleaf signalgrass ().